Abstract
During acrosome biogenesis, numerous granules formed from trans-Golgi stacks and accumulated in the concave region of the nuclear surface that is essential for acrosome formation. Several Golgi-associated proteins were involved in this process. However, the specific function of Golgi-associated proteins, especially Golgi matrix protein, during acrosome biogenesis remains elusive. In this study, we identified GOLGA4, as a Golgi matrix protein, highly expressed in mouse testes. To explore the function of GOLGA4 in spermatogenesis, we generated a Golga4 global knockout mouse line using CRISPR/Cas9 technology and demonstrated that Golga4 knockout males are fertile with normal morphology of testis and sperm. Furthermore, testicular histology showed no significant difference between WT and KO mice. Together, our data demonstrate that GOLGA4 is dispensable for mouse spermatogenesis and male fertility.
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